Improvement in stove-pipe dampers



J. H. RHAMY.

STOVE-PIPE DAMPER. N0.175,166. Patented March 21,1876.

ATTORN EYS' N. PEIERS, FHOTOLITHOGRAPHER, WASMNGTON. 0 C4 UNITED STATESPATENT Orlton JOHN H. RHAM'Y, OF ANT IOCH, INDIANA.

IMPROVEMENT IN STOVE-PIPE DAMPERS.-

Specification forming part of Letters Patent No. 1 75,166, dated March21, 1876; application filed January 8, 1876.

- valuable Improvement in Stove-Dampers; and

I do hereby declare that the following is a full, clear, and exactdescription of the construction and operation of the same, referencebeing bad to the annexed drawings, making a part of this specification,and to the letters and figures of reference marked thereon.

Figure 1 of the drawings is a representation of a vertical centralsection of my stovedamper, and Fig. 2 is a plan view of the same. Fig. 3is a transverse sectional view thereof.

This invention has relation to stove-dampers which are automatic intheir operation; and the nature of my invention consists, mainly, in theemployment inside of a drum of larger diameter than the stove-pipe towhich it is applied, of a rectangular box, inside of which is adampercontrolled by an adjustableloaded rod and a balancing spring, as will behereinatterexplained.

In the annexed drawings, A designates a drum, which'terminates in twocollars, a a, of reduced diameter, to receive the sections of a store-pipe. Inside of this drum is a rectangular box, B, which is secured toan annular base-ring, b, located at the lower end of the drum A, asshown in Fig. 1. The rectangular box B extends up about half-way thelength of the drum, and near the lower end of this box is a curveddamper, G, which is secured to a rod, 0, and passed freely through thewall of the drum. One end of the rod 0 has an arm, 0, formed at rightangles to it, to

.or the weight W can be made to preponderate;

thus the damper will be caused to rise or descend according to the forceof the draft. At the same time heat will be retained in the drum to beradiated therefrom into the drum.

What I claim as new, and desire to secure by Letters Patent, is r Thedrum A, open at both ends, terminating in the collars a a of reduceddiameters, and provided with an annular base, b, for the support of thebox B, in combination with the hinged damper O, perforated rod 0, havingan arm, 6, spring S, and Weighted adjustable screw-threaded rod f,substantially as de-,

scribed, and for the purpose set forth.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

JOHN HENRY RHAMY.

Witnesses B. F. IBACH, WM. ZINTSMASTER.

